Charles f



(No Model.)

'0. P. WALTERS & W. N. GARTSI DE.

MILL.

Patented July 23, 1889.

Inventors Attorney I I a Witnesses UNITED STATES Ar-ENT CHARLES F. .VALTERS AND IVILLIAM N. GARTSIDE, OF RICHMOND, INDIANA, ASSIGNORS TO THE RICHMOND CITY MILL IVORKS, OF SAME PLACE.

MILL.

SPECIFICATION forming part of Letters Patent No. 407,751, dated July 23, 1889.

I Application filed January 1'7, 1889. Serial No. 296,660- (No model.)

To all whom it may concern.-

Be it known that we, CHARLES F.\V ALTERS and WILLIAM N. GARTSIDE, of Richmond, lVayne county, Indiana, have invented certain 5 new and useful Improvements in Mills, of

which the following is a specification.

This invention pertains to improvements in mills designed for the crushing of ear-corn and corn-cobs and similar material; and the IO improvements will be readily understood from the following description, taken in connection with the accompanying drawings, in which- Figure 1 is a side elevation of a mill embodying our improvements; Fig. 2, an end elevation as viewed from the left of Fig. 1; Fig. 3, a vertical longitudinal section of the casing, the revolver appearing in elevation, with portions broken away to exhibit the shaft-grooves; Fig. 4, a vertical transverse section on line Z),

looking from the left of Fig. 1; Fig. 5, a plan and Fig. 6 a vertical transverse section on line a, viewed from the left of Fig. 1. Figs. 1, 2, and 5 are to one scale, and Figs. 3, 4, and 6 are to double that scale. Hopper and legs are ignored in all but Fig. 1.

In the drawings, A indicates a frusto-conical shell with its axis disposed horizontally; B, an open-topped trough, forming a prolongation of the small end of the shell A, the floor 0 of this trough being even with the floor of the shell, while the rear wall of the trough is tangent to the bore of the shell at its small end, that end of the trough farthest from the conical shell being closed, the shell and trough 5 being integrally formed in one casting; C, a semicircular plate secured to and closing the upper half of the large end of the conical shell; D, a bearing axially to the conical shell and formed in the plate C; E, a bearing-boss and bearing formed upon the end wall .of the trough and axially disposed with reference to the conical shell; F, an ordinary hopper rising upon the walls of the trough; G, an eccentric pouch-like expansion of the front of the trough; H, a discharge-lip formed by a curve downward and outward prolongation of the lower part of the bore of the conical shell at its large end; J, a cylindrical revolver ar ranged in the trough axially to the conical 5o shell, and having a diameter very much less than the smallest diameter of the conical shell; K, a conical prolongation of the revolver .I and integrally formed with it, and located within the conical shell, the degree of coning of this prolongation being such that at its large end less space is left between it and the conical shell than is left at the small end; L, rigid teeth projecting radially from the revolver J these teeth having a length sufficient to insure free clearance at the back wall and floor of the trough, these teeth being arranged in four longitudinal rows, the alternate rows having three teeth and the intermediate rows two teeth each; M, continuations of these rows of teeth upon the conical portion of the revolver, the teeth M, however, being more closely disposed in each row, these teeth having such projection as to freely clear the inwall of the conical shell; N,alongitudinal groove or pocket formed in the floor of the trough; O, a continuation of this pocket along the floor of the conical shell; P, two pockets or grooves longitudinally arranged one at the back and one at the front of the conical shell; Q, a toothed block secured in and filling the pocket N; R, teeth integrally formed upon and projecting upward from the block Q to near the revolver J, these teeth being so spaced that the teeth L will pass between them; S, a toothed block secured in the pocket 0; T, teeth projecting upward from this block and spaced to permit the passage of the teeth M; U, blocks secured in the pocket P; V, teeth projecting'inwardly from these blocks; W, the shaft of the revolver; X, two oppositely-facing shoulders upon this shaft, formed by turn ing triangular grooves in the shaft, and Y bolts by which the blocks are secured in the pockets.

The entire mill is constructed of metal. The revolver, integral with its teeth, is cast upon the shaft, and during the process of casting and cooling the metal of the revolver shrinks endwise against the shoulders X and firmly clamps the revolver to the shaft. The sides of the teeth L are beveled in such direction that they act as spirals, which, when the revolver turns in the direction indicated by the arrows, will tend to urge the contents of the trough toward the conical shell. Coarse long matter, like ears of corn, placed in. the hopper, fall to the trough and reach the eccentrio pouch G, whence the movement of the teeth L tends to lift this broken matter up along the back wall of the trough,which tendency is somewhat resisted by the gravity of the matter, the result of which is that the teeth rise faster than the broken matter rises, whereby the bevel faces of the teeth act upon the broken matter and urge it endwise toward and into the conical shell, where it is acted upon by the teeth lWI, passing between the teeth of the blocks and crushed into smaller pieces, whereupon it flows out at the discharge-lip H. The rear lower portion of the inner wall of the trough presentsasmooth floor, smoothly prolonged by the bore of the conical shell, and the periphery of the entire revolver is smooth except in thelinesof teeth, whereby the endwise movement of the material in the mill is produced with but little expenditure of power. The toothed blocks are readily removed and replaced. Removing the plate 0 and turning the revolver to a certain position permit the entire revolver and its shaft to be readily withdrawn endwise from the mill, thus rendering it practicable to take the entire mill to pieces in a few minutes.

\Ve claim as our invention 1. In a mill, the combination, substantially as set forth, of ahorizontal frusto-conical shell I prolonged into an open topped eccentric trough, and provided with an axial hearing at the end of the trough and wit-h longitudinallyarranged pockets, a removable axial hearing at the larger end of the shell, toothed blocks secured in the pockets, a shaft mounted in two oppositely-facing shoulders, and a toothed revolver upon said shaft and engaging said shoulders.

CHARLES F. WVALTERS. XVILLIAM N. GARTSIDE.

Vitnesses:

BENJ. F. I-IAINs, CHARLES T. SEAMAN. 

